Hello English App for Online Learning during the Pandemic: Does it Enhance the Students’ English Vocabulary Development?. Elsya : Journal of English Language Studies, [S. l.], v. 4, n. 1, p. 54–64, 2022. DOI: 10.31849/elsya.v4i1.8017. Disponível em: https://journal.unilak.ac.id/index.php/elsya/article/view/8017. Acesso em: 28 mar. 2026.